/* Code for loading Linux executables. Mostly linux kernel code. */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-
+#include "qemu/osdep.h"
#include "qemu.h"
+#include "user-internals.h"
+#include "loader.h"
#define NGROUPS 32
/* ??? This should really be somewhere else. */
-abi_long memcpy_to_target(abi_ulong dest, const void *src,
- unsigned long len)
+abi_long memcpy_to_target(abi_ulong dest, const void *src, unsigned long len)
{
void *host_ptr;
host_ptr = lock_user(VERIFY_WRITE, dest, len, 0);
- if (!host_ptr)
+ if (!host_ptr) {
return -TARGET_EFAULT;
+ }
memcpy(host_ptr, src, len);
unlock_user(host_ptr, dest, 1);
return 0;
}
-static int count(char ** vec)
+static int count(char **vec)
{
- int i;
+ int i;
- for(i = 0; *vec; i++) {
+ for (i = 0; *vec; i++) {
vec++;
}
-
- return(i);
+ return i;
}
static int prepare_binprm(struct linux_binprm *bprm)
{
- struct stat st;
+ struct stat st;
int mode;
int retval;
- if(fstat(bprm->fd, &st) < 0) {
- return(-errno);
+ if (fstat(bprm->fd, &st) < 0) {
+ return -errno;
}
mode = st.st_mode;
- if(!S_ISREG(mode)) { /* Must be regular file */
- return(-EACCES);
+ if (!S_ISREG(mode)) { /* Must be regular file */
+ return -EACCES;
}
- if(!(mode & 0111)) { /* Must have at least one execute bit set */
- return(-EACCES);
+ if (!(mode & 0111)) { /* Must have at least one execute bit set */
+ return -EACCES;
}
bprm->e_uid = geteuid();
bprm->e_gid = getegid();
/* Set-uid? */
- if(mode & S_ISUID) {
- bprm->e_uid = st.st_uid;
+ if (mode & S_ISUID) {
+ bprm->e_uid = st.st_uid;
}
/* Set-gid? */
* executable.
*/
if ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) {
- bprm->e_gid = st.st_gid;
+ bprm->e_gid = st.st_gid;
}
retval = read(bprm->fd, bprm->buf, BPRM_BUF_SIZE);
if (retval < 0) {
- perror("prepare_binprm");
- exit(-1);
+ perror("prepare_binprm");
+ exit(-1);
}
if (retval < BPRM_BUF_SIZE) {
/* Make sure the rest of the loader won't read garbage. */
abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
abi_ulong stringp, int push_ptr)
{
- CPUArchState *env = thread_cpu->env_ptr;
- TaskState *ts = (TaskState *)env->opaque;
+ TaskState *ts = (TaskState *)thread_cpu->opaque;
int n = sizeof(abi_ulong);
abi_ulong envp;
abi_ulong argv;
envp = sp;
sp -= (argc + 1) * n;
argv = sp;
+ ts->info->envp = envp;
+ ts->info->envc = envc;
+ ts->info->argv = argv;
+ ts->info->argc = argc;
+
if (push_ptr) {
/* FIXME - handle put_user() failures */
sp -= n;
sp -= n;
put_user_ual(argv, sp);
}
+
sp -= n;
/* FIXME - handle put_user() failures */
put_user_ual(argc, sp);
- ts->info->arg_start = stringp;
+
+ ts->info->arg_strings = stringp;
while (argc-- > 0) {
/* FIXME - handle put_user() failures */
put_user_ual(stringp, argv);
argv += n;
stringp += target_strlen(stringp) + 1;
}
- ts->info->arg_end = stringp;
/* FIXME - handle put_user() failures */
put_user_ual(0, argv);
+
+ ts->info->env_strings = stringp;
while (envc-- > 0) {
/* FIXME - handle put_user() failures */
put_user_ual(stringp, envp);
}
int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
- struct target_pt_regs * regs, struct image_info *infop,
- struct linux_binprm *bprm)
+ struct target_pt_regs *regs, struct image_info *infop,
+ struct linux_binprm *bprm)
{
int retval;
- int i;
- bprm->p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
- memset(bprm->page, 0, sizeof(bprm->page));
bprm->fd = fdexec;
bprm->filename = (char *)filename;
bprm->argc = count(argv);
retval = prepare_binprm(bprm);
- if(retval>=0) {
+ if (retval >= 0) {
if (bprm->buf[0] == 0x7f
&& bprm->buf[1] == 'E'
&& bprm->buf[2] == 'L'
}
}
- if(retval>=0) {
+ if (retval >= 0) {
/* success. Initialize important registers */
do_init_thread(regs, infop);
return retval;
}
- /* Something went wrong, return the inode and free the argument pages*/
- for (i=0 ; i<MAX_ARG_PAGES ; i++) {
- g_free(bprm->page[i]);
- }
- return(retval);
+ return retval;
}